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All Patents in class 408/169
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
48,548Jul. 04, 1865F. GleasonImproved Expanding Drilladjustable drill bits
79,276Jun. 23, 1868E. SullivanReamerreamers
184,097Nov. 07, 1876J.W. MelvinScrew-Taptaps and dies
716,439Dec. 23, 1902J.N. LapointeReamerreamers
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